When there is a green light,cars may go on.When there is a red light,cars must (s ).They must wait(u ) the red light changestogreen
问题描述:
When there is a green light,cars may go on.When there is a red light,cars must (s ).They must wait
(u ) the red light changestogreen
答
stop 停下
until 直到
句子的意思是只有等到红灯变绿了才能走
希望可以帮到你~
答
(s ). stop 停
(u ) until 直到
答
stop;until
答
stop until
答
stop,until